Plate Boundaries

What is the theory of plate tectonics?

• Earth’s crust is made of one solid piece

• Continents float freely on water

• Earth’s lithosphere is divided into plates that move

• Tectonic plates are stationary

What layer of Earth do tectonic plates float on?

• Inner core

• Mantle

• Asthenosphere

• Crust

Which type of plate boundary is associated with the creation of new crust?

• Convergent

• Transform

• Divergent

• Subduction

At a convergent boundary between an oceanic and continental plate, what usually happens?

• Plates slide past each other

• Mountains form without subduction

• Oceanic plate subducts beneath the continental plate

• New crust is formed

Which plate boundary is most likely to cause earthquakes?

• Divergent

• Convergent

• Transform

• Passive

The San Andreas Fault in California is an example of what type of boundary?

• Divergent

• Transform

• Convergent

• Subduction

Which feature is commonly formed at divergent boundaries in the ocean?

• Trench

• Mid-ocean ridge

• Volcano arc

• Fold mountains

Which boundary type can form mountain ranges like the Himalayas?

• Oceanic-oceanic convergent

• Continental-continental convergent

• Oceanic-continental divergent

• Continental transform

What type of crust is generally denser?

• Continental crust

• Oceanic crust

• Mantle crust

• Lithospheric crust

Subduction zones are typically associated with which type of plate boundary?

• Divergent

• Transform

• Convergent

• Passive margin